Dear Dr Sak,
I think there are problems with most systems presently available.
(we discuss thei problems in:
http://bmj.bmjjournals.com/cgi/content/full/328/7430/39 )
Some major issues are:
1. the need for different grading systems for different types of questions
2. the need for something simple which clinicians don't need to memorise
(is Level 1 higher or lower than Level 4?)
The GRADE collaboration is working on these issues - watch for a BMJ
publication shortly - and has made good progress on interventions, but is
only just tackling diagnosis (and that still leaves prognosis, differential
diagnosis, etc),
Meantime you might look at the classification at CEBM:
www.cebm.net - Levels of Evidence tab,
Regards,
Paul Glasziou
At 31/05/2004, [log in to unmask] wrote:
>Dear All
> Now there are many formats of level of evidence & grades of
>recommendation in clinical guidelines papers. Which format do you
>think is the most friendly used.
>
>Thanks
>Dr.Sak
Paul Glasziou
Department of Primary Health Care &
Director, Centre for Evidence-Based Practice, Oxford
ph: 44-1865-227055 www.cebm.net
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